EXPLOSION-PROOF DEVICE MANUAL

RAIL-MOUNTED SMART TEMPERATURE TRANSMITTERS

LI-24L, LI-24L SAFETY

HEAD-MOUNTED SMART TEMPERATURE TRANSMITTER

LI-24G, LI-24G SAFETY

EN.IX.LI.24.L.G

November 2020

APLISENS S.A., 03-192 Warsaw, Morelowa 7 St

tel. +48 22 814 07 77; fax +48 22 814 07 78

www.aplisens.com, e-mail: export@aplisens.com

Revision 01.A.002

Symbols used

Symbol Description

Warning about the necessity follow strictly the information provided in the documentation in order to ensure safety and full functionality of the device.

Information particularly useful for device installation and operation.

Information particularly useful for Ex device installation and operation.

Waste of electrical and electronic equipment disposal information.

BASIC REQUIREMENTS AND OPERATION SAFETY

The manufacturer shall not be liable for any damage resulting from incorrect installation, failure to maintain the device in proper condition, or device use other than intended.

Installation should be carried out by qualified staff having the required authorization to install electrical and I&C equipment. The fitter is responsible for performing the installation in accordance with this manual and with the electromagnetic compatibility and safety regulations and standards applicable to the type of installation.

If leakage in systems with I&C equipment occurs, pressurized medium poses a threat to the personnel. All safety and protection requirements must be observed during transmitter installation, operation and inspections.

If a malfunction occurs, the device should be removed and sent for repair to the manufacturer or a facility authorized by the manufacturer.

In order to minimize the risk of malfunction and associated risks to staff, do not install or use the device in particularly adverse conditions, where the following hazards occur:

Possible mechanical impacts, excessive shocks and vibration;

Excessive temperature fluctuation;

Water condensation, dust, icing.

Explosion-proof installations should be made with special care and in accordance with standards and regulations applicable to this type of installations.

Changes can be made in the manufacturing before the paper version of user documentation

is updated. Up-to-date user manuals are available on the manufacturer's website:

www.aplisens.com.

EN.IX.LI.24.L.G

Revision 01.A.002/2020.11 3

TABLE OF CONTENTS

1. INTRODUCTION .......................................................................................... 5

2. COMPLETE DELIVERY CHECKLIST ......................................................... 5

3. IDENTIFICATION MARKS. .......................................................................... 6

4. CONSTRUCTION OF THE TRANSMITTER ................................................ 7

5. ELECTROSTATIC HAZARDS ..................................................................... 7

6. SPECIAL CONDITIONS OF USE ................................................................ 8

7. INTRINSICALLY-SAFE Exi TRANSMITTERS LI24G AND LI-24G SAFETY

8

7.1. Standards used for assessment .................................................................................. 8

7.2. Transmitter intrinsic safety designations ..................................................................... 8

7.3. Permissible input and output parameters of the intrinsic safety transmitters LI-24G

and LI-24G Safety ....................................................................................................... 9

8. INTRINSICALLY-SAFE Exi TRANSMITTERS LI24L AND LI-24L SAFETY 9

8.1. Standards used for assessment .................................................................................. 9

8.2. Transmitter intrinsic safety designations ..................................................................... 9

8.3. Permissible input and output parameters of the intrinsic safety transmitters LI-24L

and LI-24L Safety ...................................................................................................... 10

9.1. Minimum and maximum supply voltage .................................................................... 10

9.2. Load resistance ......................................................................................................... 10

10.1. Linear power supply example .................................................................................... 11

10.2. Trapezoidal power supply example ........................................................................... 11

10.3. Rectangular power supply example .......................................................................... 11

11. CONNECTING Exi TRANSMITTERS ........................................................ 12

12. ADDITIONAL INFORMATION ................................................................... 13

12.1. Additional information ................................................................................................ 13

12.2. History of revisions .................................................................................................... 13

LIST OF DRAWINGS

Figure 1. Sample transmitter nameplates LI-24G ................................................................... 6

Figure 2. Sample transmitter nameplate LI-24L Safety ........................................................... 7

Figure 3. Principle of power supply from a linear source....................................................... 11

Figure 4. Principle of power supply from a trapezoidal source. ............................................. 11

Figure 5. Connecting Exi transmitters ................................................................................... 12

LIST OF TABLES

Table 1. Permissible input parameters in the power supply circuit (terminals "+", "-") for

LI-24G and LI-24G Safety transmitters in Exi version .............................................................. 9

Table 2. Permissible output parameters in the temperature sensor circuit (terminals "1", "2",

"3", "4", "5") for the LI-24G and LI-24G Safety transmitters in Exi version ............................... 9

Table 3. Permissible input parameters in the power supply circuit (terminals "+", "-") for

LI-24L and LI-24L Safety transmitters in Exi version ............................................................. 10

EN.IX.LI.24.L.G

4 Revision 01.A.002/2020.11

Table 4. Permissible output parameters in the temperature sensor circuit (terminals "1", "2",

"3", "4", "5") for the LI-24L and LI-24L Safety transmitters in Exi version ............................... 10

Table 5. Transmitter supply voltages in Exi version ............................................................... 10

EN.IX.LI.24.L.G

Revision 01.A.002/2020.11 5

1. INTRODUCTION

This manual is only applicable to the LI-24L, LI-24L Safety, LI-24G i LI-24G Safety series

transmitters in Exi (intrinsically safe). The transmitters are identified with model ID on

nameplates and also as specified in section 3. Ex information are included in the “Product

Certificate”. Model ID indicates type and version of transmitter.

The manual contains most important information on intrinsically safe transmitters compliant

with ATEX directive and IECEx requirements. If intrinsically safe transmitters are installed,

refer to this manual and also:

- EN.IO.LI.24.L.G.SFT manual for LI-24L Safety, LI-24G Safety series transmitters,

- EN.IO.LI.24.L.G manual for LI-24L, LI-24G series transmitters.

SAFETY Read this manual carefully before installing, commissioning and operating the

transmitter.

Installation and maintenance should be carried out by qualified staff having the

required authorization to install electrical and measuring devices.

The transmitter should used as intended within permissible parameters.

Power source must be disconnected before installing or removing the transmitter.

No repairs or alterations to the transducer electronic system are permitted. Only

the manufacturer or a facility authorized by the manufacturer may assess

damages and repair the device (if possible).

Do not use damaged instruments. In case of failure, the device must be

disconnected.

If the equipment is used in Ex zones, the technical requirements specified in this

manual and applicable local (national) regulations must be followed.

2. COMPLETE DELIVERY CHECKLIST

The user receives the following with the transmitter:

a) Product Certificate, which also constitutes a warranty card.

b) Declaration of Conformity.

c) Certificate copy (on request).

d) EN.IX.LI.24.L.G explosion-proof device manual.

e) EN.IO.LI.24.L.G.SFT user manual or EN.IO.LI.24.L.G user manual.

Items b), c), d), e) are available at www.aplisens.com.

EN.IX.LI.24.L.G

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3. IDENTIFICATION MARKS.

Each transmitters are equipped with a nameplate showing the following data:

1. Logo or name of the manufacturer;

2. Transmitter identification;

3. CE mark;

4. QR product code;

5. Transmitter ID number;

6. Types of measuring inputs;

7. Supply voltage value;

8. Permissible ambient temperature range;

9. Output signal;

10. “Caution” symbol. See the relevant information in the user’s manual;

11. Transmitter serial number;

12. Year of production;

13. Number of the notified body supervising Ex products;

14. Identification of the explosion-proof version type, certificate identification see point 7.2

for LI-24G, LI-24G Safety and point 8.2 for LI-24L, LI-24L Safety;

15. Intrinsic safety parameters, i.e.: Ui, Ii, Pi, Li, Ci, Uo, Io, Po, Co, Lo.

Figure 1. Sample transmitter nameplates LI-24G

EN.IX.LI.24.L.G

Revision 01.A.002/2020.11 7

Figure 2. Sample transmitter nameplate LI-24L Safety

4. CONSTRUCTION OF THE TRANSMITTER

The LI-24L, LI-24L Safety, LI-24G, LI-24G Safety, temperature transmitter consist of a plastic

housing and an electronic unit located inside that converts the signal from the measurement

sensor to a unified output signal. LI-24L, LI-24L Safety, temperature transmitters are

designed for direct mounting on DIN 35 rail.

The LI-24G and LI-24G Safety temperature transducers can be installed in B, DA, NA, DAN,

DANW casings from Aplisens or other casings.

5. ELECTROSTATIC HAZARDS

Transmitter housing and rating plate are made of plastic. Due to the possibility of electrifying

the plastic housing and the occurrence of electrostatic discharges, it is recommended to

mount the transmitter in a safe area and connect it with a cable to a sensor located in an

explosion hazard zone. If there is a need to install the transmitter in a hazardous area, it

should be protected against the possibility of electrifying the housing, e.g. by placing it in a

metal housing or in a metal cabinet. Transmitters in hazardous areas should be installed in a

place where there is no possibility of electrostatic charging.

When performing connection and maintenance activities in the hazardous area, the

possibility of electrostatic discharge should be eliminated. Do not wipe the transmitter dry.

EN.IX.LI.24.L.G

8 Revision 01.A.002/2020.11

6. SPECIAL CONDITIONS OF USE

a) The maximum temperature of the external heating source cannot heat the transmitter

above the maximum ambient temperature declared by manufacturer.

b) Temperature transmitters in potentially explosive areas should be installed in

enclosures designed for operation in these areas and provide a minimum degree of

protection: IP54 for Group I devices, IP20 for Group II devices and IP5X for Group III

devices.

c) In hazardous zones the transmitters should be installed in a way that prevents

electrostatic charging, in accordance with the instructions.

7. INTRINSICALLY-SAFE Exi TRANSMITTERS LI24G AND

LI-24G SAFETY

7.1. Standards used for assessment

The transmitters are manufactured in compliance with the following standards:

EN IEC 60079-0:2018; (IEC 60079-0:2017 ed. 7.0),

EN 60079-11:2012; (IEC 60079-11:2011 ed. 6.0.),

EN 50303:2000.

7.2. Transmitter intrinsic safety designations

The following ATEX and IECEx markings apply only to intrinsically safe transmitters marked

with the type and model ID:

LI-24G ID 0025 0010 ..., LI-24G ID 0025 0014 ..., LI-24G Safety ID 0004 0006 0003 ...,

ATEX:

I M1 Ex ia I Ma

II 1G Ex ia IIC T5/T6 Ga

II 1D Ex ia IIIC T105 ºC Da

KDB 20 ATEX 0005X

IECEx:

Ex ia I Ma

Ex ia IIC T5/T6 Ga

Ex ia IIIC T105 ºC Da

IECEx KDB 20.0001X

Supply power to transmitters from supply and measurement devices with applicable

intrinsic safety certificates whose parameters of outputs to a hazard zone should not

exceed the permissible transmitter power supply parameters specified below.

EN.IX.LI.24.L.G

Revision 01.A.002/2020.11 9

7.3. Permissible input and output parameters of the intrinsic safety

transmitters LI-24G and LI-24G Safety

Table 1. Permissible input parameters in the power supply circuit (terminals "+", "-") for

LI-24G and LI-24G Safety transmitters in Exi version

Linear power supply

Rectangular power supply

Trapezoidal power supply

Ui=30V Ui=24V Ui=24V, UQ=48V

Ii=0,1A Ii=0,025A Ii=0,05A

Pi=0,75W Pi=0,6W Pi=0,6W

Ci=2,5nF Ci=2,5nF Ci=2,5nF

Li=910µH Li=910µH Li=910µH

-40⁰C≤Ta≤+50⁰C (T6)

-40⁰C≤Ta≤+70⁰C (T5)

-40⁰C≤Ta≤+50⁰C (T6)

-40⁰C≤Ta≤+70⁰C (T5)

-40⁰C≤Ta≤+50⁰C (T6)

-40⁰C≤Ta≤+70⁰C (T5)

Table 2. Permissible output parameters in the temperature sensor circuit (terminals "1", "2",

"3", "4", "5") for the LI-24G and LI-24G Safety transmitters in Exi version

Uo Io Po Co Lo

6 V 3.3 mA 19.8 mW 2.5 µF 2 mH

8. INTRINSICALLY-SAFE Exi TRANSMITTERS LI24L AND

LI-24L SAFETY

8.1. Standards used for assessment

The transmitters are manufactured in compliance with the following standards:

EN IEC 60079-0:2018; (IEC 60079-0:2017 ed. 7.0),

EN 60079-11:2012; (IEC 60079-11:2011 ed. 6.0.),

EN 50303:2000.

8.2. Transmitter intrinsic safety designations

The following ATEX and IECEx markings apply only to intrinsically safe transmitters marked

with the type and model ID:

LI-24L ID 0024 0009 ..., LI-24L ID 0024 0013 ..., LI-24L Safety ID 0003 0005 0003 ...,

ATEX:

I M1 Ex ia I Ma

II 1G Ex ia IIC T4/T5 Ga

KDB 20 ATEX 0005X

IECEx:

Ex ia I Ma

Ex ia IIC T4/T5 Ga

IECEx KDB 20.0001X

EN.IX.LI.24.L.G

10 Revision 01.A.002/2020.11

Supply power to transmitters from supply and measurement devices with applicable

intrinsic safety certificates whose parameters of outputs to a hazard zone should not

exceed the permissible transmitter power supply parameters specified below.

8.3. Permissible input and output parameters of the intrinsic safety

transmitters LI-24L and LI-24L Safety

Table 3. Permissible input parameters in the power supply circuit (terminals "+", "-") for

LI-24L and LI-24L Safety transmitters in Exi version

Linear power supply

Rectangular power supply Trapezoidal power

supply Ui=30V Ui=24V Ui=24V Ui=24V, UQ=48V

Ii=0,1A Ii=0,025A Ii=0,05A Ii=0,05A

Pi=0,75W Pi=0,6W Pi=1,2W Pi=0,6W

Ci=2,5nF Ci=2,5nF Ci=2,5nF Ci=2,5nF

Li=0µH Li=0µH Li=0µH Li=0µH

-40⁰C≤Ta≤+55⁰C (T5)

-40⁰C≤Ta≤+85⁰C (T4)

-40⁰C≤Ta≤+55⁰C (T5)

-40⁰C≤Ta≤+85⁰C (T4) -40⁰C≤Ta≤+85⁰C (T4)

-40⁰C≤Ta≤+55⁰C (T5)

-40⁰C≤Ta≤+85⁰C (T4)

Table 4. Permissible output parameters in the temperature sensor circuit (terminals "1", "2",

"3", "4", "5") for the LI-24L and LI-24L Safety transmitters in Exi version

Uo Io Po Co Lo

6 V 3.3 mA 19.8 mW 2.5 µF 2 mH

9. TRANSMITTER POWER SUPPLY PARAMETERS

9.1. Minimum and maximum supply voltage

Table 5. Transmitter supply voltages in Exi version

Minimum supply voltage Maximum supply voltage

10 V According to table 1 for LI-24G, LI-24G Safety According to table 3 for LI-24L, LI-24L Safety

9.2. Load resistance

a) For a linear power supply from a barrier

b) For power supply from a trapezoidal or rectangular source.

Rw – barrier resistance;

Uapp – minimum voltage of the barrier used *) for transmitters in Safety version, the current value should be taken 0.02082A

EN.IX.LI.24.L.G

Revision 01.A.002/2020.11 11

10. EXAMPLE OF POWER SUPPLY FOR TRANSMITTERS IN

EXPLOSION HAZARD AREAS.

10.1. Linear power supply example

For example, linear power supply is provided by a typical barrier with the following

parameters

Uo = 28V; Io = 0.1A; Po = 0.7W; Rw = 280.

Figure 3. Principle of power supply from a linear source.

10.2. Trapezoidal power supply example

Uo = 24V; Io = 50mA; Po = 0.7W

An example of trapezoidal power supply is shown in Figure 4.

Figure 4. Principle of power supply from a trapezoidal source.

If

, UQ, I0, P0 have the following relations:

If UQ, I0, P0 have the following relations:

Resistance Rw:

10.3. Rectangular power supply example

Uo = 24 V Io = 25 mA Po = 0.6 W

Uo = 24 V Io = 50 mA Po = 1.2 W

tran

sm

itte

r

tran

sm

itte

r

Io

Ui Uo

Q I Rw

UQ

Ii

EN.IX.LI.24.L.G

12 Revision 01.A.002/2020.11

Rectangular power supply means that the voltage of an intrinsically safe power adapter

does not change until the current limiter is activated.

The level of protection of rectangular power supply adapters is usually “ib”. A transmitter

supplied from such power adapter is usually an “ib” intrinsically safe device.

An example of power supply in practice:

A stabilized power adapter with Uo = 24 V, “ib” protection level and current limited to

Io = 25 mA.

11. CONNECTING Exi TRANSMITTERS

Transmitter and equipment in the transmitter measurement loop must be connected

in compliance with intrinsic safety and explosion proofing standards and conditions

for application in risk zones. If intrinsic safety rules are not followed, explosion can

occur and people can be exposed to danger.

Figure 5. Connecting Exi transmitters

If we want to communicate with the transducer (via the HART protocol) by connecting

the communicator (as in Figure 5) we must make sure that the resistance Ro seen

from the transducer terminals towards the power source is in the range of 240 [Ω]

≤Ro≤1100 [Ω] . If Ro <240 [Ω] does not communicate, then increase Ro to the

minimum value of 240 [Ω]. The Ro resistor is only used during Hart communication.

For standard 4-20mA transducer operation, the Ro resistor is not required.

EN.IX.LI.24.L.G

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The electrical system for connecting transmitters should meet installation requirements of applicable standards. No repairs or alterations to the transmitter electrical system are permitted. Only the

manufacturer or a facility authorized by the manufacturer may assess damages and

repair the device (if possible).

To minimize the risk of electrostatic discharge in potentially explosive areas, make

connections to the transmitter terminals outside these areas.

Due to the type of material used, the user is obliged to ensure the installation of the

transmitter in accordance with the specific conditions of use.

Use a cable with or without shielding, unreinforced, compact and round cross-

section, in an elastomer sheath, e.g. polyvinite, non-absorbent, e.g. YKSLY 2 * 1,

YnTKSYekw 1 * 2 * 1, LIYCY 2 * 1. Cables should be protected against damage by

routing them e.g. in trays, conduits, cable ladders, permanent fasteners etc.

General principles of connecting and operating the transducer in Exi version should

comply with the principles and standards for devices with intrinsically safe

construction:

PN-EN60079-14 - Explosive atmospheres - Part 14: Design, selection and assembly

of electrical installations.

PN-EN60079-17 - Explosive atmospheres - Part 17: Inspection and maintenance of

electrical installations.

12. ADDITIONAL INFORMATION

12.1. Additional information

The manufacturer reserves the right to introduce structural and technological changes to the

device, which does not deteriorate its performance.

12.2. History of revisions

Revision No

Document revision Description of changes

- 01.A.001/2020.05 Initial document version. Prepared by DCF.

1 01.A.002/2020.11 Change of ID numbers. Prepared by DCF.